# Configuration

{% hint style="warning" %}
**This is the manual for older MicroStream versions (Version < 5.0).**

**The new documentation (Version >= 5.0) is located at:**

[https://docs.microstream.one/](https://docs.microstream.one/manual)
{% endhint %}

The wrapper code generator is an annotation processor, provided by the `base` module.

The maven configuration looks like this:

```markup
<dependencies>
	<dependency>
		<groupId>one.microstream</groupId>
		<artifactId>base</artifactId>
		<version>04.00.00-MS-GA</version>
	</dependency>
</dependencies>

<build>
	<plugins>
		<plugin>
			<groupId>org.apache.maven.plugins</groupId>
			<artifactId>maven-compiler-plugin</artifactId>
			<version>3.8.1</version>
			<configuration>
				<source>1.8</source>
				<target>1.8</target>
				<encoding>UTF-8</encoding>
				<annotationProcessors>
					<annotationProcessor>one.microstream.wrapping.codegen.WrapperProcessor</annotationProcessor>
				</annotationProcessors>
				<compilerArgs>
					<arg>-Amicrostream.wrapper.types=one.microstream.persistence.types.PersistenceStoring</arg>
				</compilerArgs>
			</configuration>
		</plugin>
	</plugins>
</build>

```

There are following ways to get the base wrapper types generated. If you want it for your own types, the best way is to use the `GenerateWrapper` annotation.

```java
@GenerateWrapper
public interface MyInterface
{
	public void doStuff();
	
	public String getStuff();
}
```

Or, if you want it for interfaces in libraries, like `PersistenceStoring`, you cannot add an annotation. That's what the `microstream.wrapper.types` parameter is for. This is just a comma separated list of types. Alternatively you can use the `GenerateWrapperFor` annotation:

```java
@GenerateWrapperFor("one.microstream.persistence.types.PersistenceStoring")
public class WrapperGenerationDummy
{
}
```

It accepts a list of type names. Plain strings have to be used instead of class literals, because it is read inside the compilation cycle which prohibits access to class elements.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://manual.docs.microstream.one/4.0/basic-concepts/wrapping/configuration.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.